Featured Project: Zero-Liquid Wastewater Treatment System (ZLD) at Industrial Gas Production Plant [2] – Quang Ngai

In today’s industrial landscape, environmental protection and strict regulatory compliance have become top priorities. As a result, hazardous industrial wastewater treatment using Zero Liquid Discharge (ZLD) systems is emerging as an inevitable trend.
Below is one of our flagship projects, clearly demonstrating our capabilities in engineering, manufacturing, installation, and operation of complex industrial wastewater treatment systems, especially for industrial gas plants.

Note: [2]: The project number is signed consecutively with the same investor.

1. Project Overview

Project name:
Design, manufacture, supply, installation, and operation of a Zero Liquid Discharge (ZLD) industrial wastewater treatment system.

Location:
Quang Ngai Province, Vietnam

System capacity:
10 m³/day (22 hours of operation per day)

Treatment scope:
Hazardous industrial wastewater from an industrial gas manufacturing plant

Project objectives:

• Ensure treated water meets QCVN 40:2011/BTNMT – Column A

• Achieve Zero Liquid Discharge (ZLD) with no liquid effluent released to the environment

2. Characteristics of Influent Wastewater

Type of facility:
Grade III technical infrastructure project

Wastewater type:
Hazardous industrial wastewater

Key challenges:

• High pollutant concentrations

• Complex chemical composition

• Requires advanced and specialized treatment technology

3. Applied Technology Solution

To effectively treat high-strength hazardous wastewater, the project applies wastewater evaporation technology—one of the most advanced and efficient solutions currently used in Zero Liquid Discharge (ZLD) systems.

Key advantages of the evaporation-based ZLD solution:

• Maximizes clean water recovery

• Completely eliminates the risk of liquid discharge to the environment

• Highly suitable for industries with complex wastewater and high TDS (Total Dissolved Solids), such as industrial gas manufacturing

4. Treatment Results

Recovered clean water:
Approximately 9 m³/day

Treated water quality:

• Fully compliant with QCVN 40:2011/BTNMT – Column A

• Achieves Zero Liquid Discharge (ZLD)

• Generates approximately 150 kg of sludge per day, safely collected and managed

Key benefits delivered:

• Significant reduction of environmental pollution

• Full compliance with environmental regulations

• Long-term cost savings through water reuse and resource recovery

5. Actual Images of the ZLD System at the Industrial Gas Plant in Quang Ngai

Why Choose a Zero Liquid Discharge (ZLD) Wastewater Treatment System?

• Optimized long-term operating and water reuse costs

• Sustainable environmental protection

• Full compliance with stringent environmental regulations

• Ideal for industries generating hazardous wastewater, such as:
  chemical manufacturing, industrial gases, liquefied gases, metallurgy, and electronic component production

Looking for a comprehensive solution for industrial gas plant wastewater treatment?

A Zero Liquid Discharge (ZLD) system is a smart and future-proof choice.
Contact us today for professional consultation and a customized wastewater treatment design tailored to your actual operating conditions.